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gpio: stmfx: add ops set_dir_flag

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Manage the flags for GPIO configuration:
- open_drain, push_pull
- pull_up, pull_down

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrick Delaunay
2020-06-04 14:30:30 +02:00
parent fabb6e14c8
commit 22b3fe4224
1 changed files with 37 additions and 0 deletions
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37
drivers/pinctrl/pinctrl-stmfx.c
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@@ -153,6 +153,42 @@ static int stmfx_gpio_direction_output(struct udevice *dev,
return stmfx_write_reg(dev, STMFX_REG_GPIO_DIR, offset, 1);
}
static int stmfx_gpio_set_dir_flags(struct udevice *dev, unsigned int offset,
ulong flags)
{
int ret = -ENOTSUPP;
if (flags & GPIOD_IS_OUT) {
if (flags & GPIOD_OPEN_SOURCE)
return -ENOTSUPP;
if (flags & GPIOD_OPEN_DRAIN)
ret = stmfx_conf_set_type(dev, offset, 0);
else /* PUSH-PULL */
ret = stmfx_conf_set_type(dev, offset, 1);
if (ret)
return ret;
ret = stmfx_gpio_direction_output(dev, offset,
GPIOD_FLAGS_OUTPUT(flags));
} else if (flags & GPIOD_IS_IN) {
ret = stmfx_gpio_direction_input(dev, offset);
if (ret)
return ret;
if (flags & GPIOD_PULL_UP) {
ret = stmfx_conf_set_type(dev, offset, 1);
if (ret)
return ret;
ret = stmfx_conf_set_pupd(dev, offset, 1);
} else if (flags & GPIOD_PULL_DOWN) {
ret = stmfx_conf_set_type(dev, offset, 1);
if (ret)
return ret;
ret = stmfx_conf_set_pupd(dev, offset, 0);
}
}
return ret;
}
static int stmfx_gpio_probe(struct udevice *dev)
{
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
@@ -181,6 +217,7 @@ static const struct dm_gpio_ops stmfx_gpio_ops = {
.get_function = stmfx_gpio_get_function,
.direction_input = stmfx_gpio_direction_input,
.direction_output = stmfx_gpio_direction_output,
.set_dir_flags = stmfx_gpio_set_dir_flags,
};
U_BOOT_DRIVER(stmfx_gpio) = {